Lubricant separator



Oct. 19 1926. 1,603,426

A. M. THOMSON LUBRICANT SEPARATOR Filed August 24. 1925 I 11vV E 1\/ TOR. A; F1 A I F 8,3 w MA I A TTORNE Y.

Patented ct. 19, 123..

ALFRED MORRIS THOMSON, OF NEWARK, NEW JERSEY, ASSIGNOR TO JOSEPH MER- CADANTE, OF NEW YORK, N. Y.

LUBRICANT SEPARATOR.

Application filed August 24, 1925. Serial No. 52,181.

In the prior art one of the chief diflicul' ties in electrical refrigerators is that the necessary lubricant, used in the compressign pump, becomes after a time split up ino very minute particles which are so sn all that they are carried bodily by the refrigerating fluid through the cooling coil and into the refrigerating system, and thereupon these minute particles of the lubricant become congealed into much larger units and gradually stop up the various working parts of the refrigerating system.

My invention relates to lubricant separators to separate the lubricating oil from refrigerating fluid in electric refrigerators, and thus to avoid this gradual stopping up of the refrigerating system.

- I obtain this object by the mechanism illustrated in the accompanying drawings, in which:

Fig. 1 is a sectional side-view of my applied device taken on section line 11 of Fig. 2; and Fig. 2 is a sectional end-view of my applied device taken on section line 2-2 of Fig. 1.

Similar letters refer to similar parts throughout the several views.

Q is a rotary pump operated by shaft Q P is an air fan rotating with said shaft Q R is a housing, with finsS. E is the discharge end of housing. R, and F is the bottom space of housing R. U is a tube for taking the refrigerating fluid from cooling coil T into rotary pump Q, and W is the outlet tube for the refrigerating fluid from housing R. B is the outlet tube'from housing R for the lubricant. A is a cooling tube with fins F, which receives the lubricant from outlet tube B. C is a tube connecting cooling tube A with cooling tube A which has fins F. D is an outlet tube from cooling tube A to the intake end of rotary pump Q. T is the cooling coil which receives the refrigerating fluid from outlet tube W.

The operation of my device is as follows:

Assume that rotary ump Q is in operation rotated by shaft Q with air fan P also being rotated by shaft Q and with a lubricant being drawn into pump Q through .houslng,

tube D, and with the refrigerating fluid being drawn into pump Q through tube U. Rotary pump Q thereupon will discharge the lubricant and the refrigerating fluid under pressure into the inside of housing R, as shown in space E. Thereupon the refrigerating fluid being in gaseous form and under pressure will work out through tube W and cooling tube T, and the lubricant being in liquid form and under pressure will drop to space F, and will work out through tube into cooling tube A. The circulating air driven by air fan P will cool tube A, and said cooling will be increased through fins F. From cooling tube A, the lubricant will travel through tube G into cooling tube A with fins F where the cooling of the lubricant will be further increased. From cooling tube A the lubricant will be drawn through tube D into the suction end of rotary pump Q. By reason of this coolin process the lubric nt, which otherwise woul have been left in minute particles, is reduced once more to its normal liquid condition, and enters rotary pump Q as a normal flowing liquid.

It will be understood that fins F and F might be omitted, or that the cooling of tubes and A might be effected through cooling water or other cooling means, without departing from the essential elements of my invention.

I claim 1. A lubricant separator comprising a pump, a refrigerating fluid and a lubricant operated on by said pump, a housing surrounding said pump, an outlet adapted to discharge said refrigerating fluid from said another outlet adapted to discharge said lubricant from said housing, cooling means adapted to receive said lubricant and cool the same, and an outlet from said cooling means adapted to discharge said lubricant from said cooling means into the intake end of said pump.

2. A lubricant separator comprising a pump, a refrigerating fluid and a lubricant operated on by said pump, means for discharging said refrigerating fluid from said pump, separate means for discharging said lubricant from said pump, means for receiving and cooling said lubricant, and means for conducting said lubricant from said cooling means to said pump.

3. A lubricant separator comprising a pump, a refrigerating fluid and a lubricant operated on by said pump, means for discharging said refrigerating fluid from said pump, separate means for discharging said lubricant from said pump, a cooling tube W with fins adapted to receive said lubricant, an air fan adapted to cool said cooling tube, and means for conducting said lubricant from said cooling means to said pump.

ALFRED MORRIS THOMSON. 

